Book OrnamentationPigmentationMating Preference, AnimalComb and WattlesSexual Behavior, AnimalPoeciliaAnimal CommunicationGalliformesTrinidad and TobagoSex CharacteristicsFeathersPair BondSongbirdsColorBiological EvolutionBirdsReproductionSelection, GeneticMicroscopy, Electron, ScanningCarotenoidsPhylogenyModels, Biological